Characteristics of Cd, As, and Pb Pollution in Farmland Soil and Edible Parts of Chili Pepper and Sweet Potato and Their Health Risk Assessment

被引:0
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作者
农 田 土 壤 和 辣 椒 /甘 薯 可 食 部 位 镉 砷 铅 污 染 特 征 及 健康 风 险 评 价
机构
[1] Zhang, Zhi-Qiang
[2] Wei, Liang
[3] Geng, Li-Ping
[4] Liu, Feng
[5] Zhao, Quan-Li
[6] Wu, Hong-Bin
[7] Xue, Pei-Ying
[8] Liu, Wen-Ju
来源
Liu, Wen-Ju (Liuwj@hebau.edu.cn) | 2025年 / 46卷 / 01期
关键词
Air quality - Emergency services - Fertilizers - Heavy metals - Sewage;
D O I
10.13227/j.hjkx.202312242
中图分类号
学科分类号
摘要
To clarify the characteristics of Cd, As, and Pb concentrations in edible parts of crops and farmland soils, a key farmland survey was conducted on the field scale to investigate the characteristics of Cd, As, and Pb in soil and chili pepper (edible parts in the above-ground section)and sweet potato (edible parts under the ground) and assess the health risk of Cd-As-Pb in edible parts of chili pepper and sweet potato to humans in the typical co-contaminated agricultural soils by Cd, As, and Pb from metal smelting and sewage irrigation in North China. The results showed that the agricultural soil from chili pepper and sweet potato fields was co-contaminated by Cd and As at a moderate pollution level. The combined pollution index(2.82)of soil from sweet potato farmland was significantly higher than that from chili pepper fields (2.38) for sweet potato land much nearer to the pollution sources (P-1 in the national standard of Green food pepper products (NY/T 1711-2020), but the concentrations of Cd, As, and Pb in edible parts of sweet potato did not exceed theNational food safety standard food pollutant limit(GB 2762-2022). Additionally, the bioaccumulation factors (BAFs) of Cd, As, and Pb in edible parts of chili pepper to soil were markedly higher than those of sweet potatoes, especially for Cd, which showed the maximum of the BAFs for chili pepper. Therefore, BAFs could be the key factor in Cd accumulation in the fruits of chili peppers. The risk assessment of Cd and As as the carcinogenic elements in edible parts of chili pepper and sweet potato to human health demonstrated that Cd in the whole fruit of chili pepper had posed a significant health risk to adults (Ri>1×10-4), and it was an acceptable level of health risk from Cd and As in edible parts of both crops to children. The non-carcinogenic element of Pb in the fruits of both crops did not cause health risks to adults or children. In summary, the chili pepper products from this co-contaminated farmland by Cd and As would pose risks to human health, and the sweet potato products would cause acceptable health risks to humans. © 2025 Science Press. All rights reserved.
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页码:470 / 477
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